clearheaded

American  

[kleer-hed-id] / ˈklɪərˈhɛd ɪd /

adjective

1. having or showing an alert mind.

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Other Word Forms

Derived Forms

• clearheadedly
  adverb
• clearheadedness
  noun

Etymology

Origin of clearheaded

First recorded in 1700–10; clear + head ( def. ) + -ed ³ ( def. )

Explanation

If you're clearheaded, you're wide awake, focused, and thinking sensibly. A clearheaded student will probably do better on a calculus test than her sleepy, confused classmate. Complex thought and analysis ideally requires a clearheaded thinker — and you can also describe the thinking and decisions themselves as clearheaded. A clearheaded debate between political candidates is much more useful and interesting than a muddled, angry, and confusing argument. The word clearheaded, sometimes spelled with a hyphen, clear-headed, originated in the early 18th century.

Example Sentences

Deciding to rent first allows you to settle in slowly, let the early enthusiasm pass and put yourself in a position to make clearheaded decisions.

From MarketWatch • Apr. 24, 2026

Grant, on the other hand “talks like an earnest business-man—prompt clearheaded & decisive—& utters no bosh.”

From The Wall Street Journal • Jan. 23, 2026

In Chay Yew’s clearheaded production, with an excellent cast, the touching opera had little trouble making its impact at the performance on Saturday evening.

From New York Times • May 19, 2024

I profusely thanked them, but am glad my friend who was with me was more clearheaded and offered them a cash tip.

From Seattle Times • Jan. 7, 2024

When a person is clearheaded, the frontal lobe becomes freed of the humming and buzz of external pressure.

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel